JPH0514463Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to improvement of lead-acid batteries.

[Prior art] Figure 6 shows the structure of a conventional lead-acid battery.
The battery case body 1 has a plurality of cell chambers 3 formed by a plurality of partition walls 2.
Each cell chamber 3 has a plate-shaped saddle 4 at the bottom.
is provided. In addition, each partition wall 2 forming the inner wall of each cell chamber 3 has a spacer 5 made of reinforcing fiber or the like.
is supported. In each cell chamber 3 in which the saddle 4 and the spacer 5 are arranged, an electrode plate group 6 is housed so that the bottom part is placed on the saddle 4 and both ends in the stacking direction are in contact with the spacer 5. The electrode plate group 6 is constructed by laminating a plurality of anode plates 8 and a plurality of cathode plates 9 separated by a separator 7, and the ears 8a of each anode plate 8 are connected with a strap 10, and each cathode plate 9
The ears 9a of the straps are connected by straps 11.

[Problems to be solved by the invention] As described above, in the type of lead-acid battery that is stored so that both ends of the electrode plate group 6 in the stacking direction are in contact with the spacer 5, the electrode group 6 is not connected to the cell chamber 3. There is a problem in that an excessive force is applied to the electrode plate group 6 during the storage operation, causing the straps 10 and 11 to come off from the anode plate 8 and the cathode plate 9, or the straps 10 and 11 to be broken. Further, there was a problem in that the electrode plates located at both ends of the electrode plate group 6 in the stacking direction were damaged by contact with the spacer when the electrode plate group 6 was inserted into the cell chamber 3.

An object of the present invention is to provide a lead-acid battery that can prevent the strap from coming off the electrode plates when storing the electrode plate group in each cell chamber, and can prevent the electrode plates from being damaged by the spacer.

[Means for Solving the Problems] The present invention will be explained based on the embodiments shown in Figs. The electrode plate group 6 is housed in each cell chamber 3 of the battery case, and the spacer 5 is arranged between both ends of the electrode plate group 6 in the stacking direction and the inner wall of each cell chamber 3, so that the electrode plate group 6 is Targets lead-acid batteries that are pressurized in the stacking direction. In the present invention, the electrode plate group housing 12 is configured such that a pair of side plate parts 16 that cover at least both ends of the electrode plate group 6 in the stacking direction and a bottom plate part 15 that covers the bottom of the electrode plate group 6 are integrally formed. The battery case 6 is housed in the cell chamber 3 in such a manner that the pair of side plates 16 are in contact with the spacer 5 and the bottom plate 15 is separated from the bottom wall of the battery case body 1. The bottom plate part 15 of the electrode plate group housing 12 has movement prevention parts 17 and 19 that prevent the movement of the electrode plate group 6 in the width direction perpendicular to the stacking direction, and drop active materials fall below the bottom plate part 15. A drop hole 21 is formed. Further, a plurality of electrolyte flow holes 20 are formed in the pair of side plate portions 16 .

[Function] As described above, when the electrode plate groups 6 are accommodated in the electrode plate group storage body 12, when each electrode plate group 6 is accommodated in each cell chamber 3, the stacking posture of the electrode plate groups 6 is not disturbed. , can be stored in each cell chamber 3. Therefore, when storing the electrode plate group 6, no excessive force is applied to the individual electrode plates. In addition, since the electrode plate group 6 stored in each cell chamber 3 is held by the electrode plate group container 12, even if vibration etc. occur after the electrode plate group 6 is stored in the cell chamber 3, the electrode group Protected by the housing 12, the straps 10 and 11 do not come off the anode plate 8 and the cathode plate 9 as in the conventional case.

In particular, the electrode plate group 6 is attached to the bottom plate portion 15 of the electrode plate group housing 12.
Since the movement prevention parts 17 and 19 are provided to prevent the electrode plate group 6 from moving in the width direction perpendicular to the stacking direction of the electrode plate group 6, collapse of the stacked posture of the electrode plate group 6 can be reliably prevented. In addition, since the bottom plate part 15 of the electrode plate group housing 12 is formed with a drop hole through which the fallen active material falls below the bottom plate part, even if the electrode plate group housing 12 is provided, the fallen active material cannot be collected. Therefore, it is possible to prevent short circuits between the electrode plates. Further, since a plurality of electrolyte flow holes 20 are formed in the pair of side plates 16 of the electrode plate group housing 12, the electrode plate group housing 12 does not obstruct the flow of the electrolyte.

[Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5.

In this embodiment, the battery case body 1 has a plurality of partition walls 2.
It has a plurality of cell chambers 3 divided by. Each cell chamber 3 is provided with a plate-shaped saddle 4 at its bottom, and each partition wall 2 forming the inner wall of each cell chamber 3
A spacer 5 is supported by the spacer 5 . In each cell chamber 3 in which the saddle 4 and the spacer 5 are provided in this manner, a plate group 6 housed in a plate group housing 12 is housed. The electrode plate group 6 includes a plurality of anode plates 8 and a plurality of cathode plates 9 separated by a separator 7 as in the conventional one, and the ears 8a of each anode plate 8 are connected by a strap 10, and each anode Ear part 8 of plate 8
A is connected by a strap 11, respectively. Furthermore, pole posts 13 and 14 are integrally formed on each of the straps 10 and 11.

The electrode plate group housing 12 is made up of a rectangular bottom plate part 15 that covers the bottom of the electrode plate group 6, and a pair of side plate parts 16 that cover both ends of the electrode plate group 6 in the stacking direction. A pair of foot fixing recesses 17, 17 are formed on the surface of the bottom plate portion 15, into which the foot portions 8b of each anode plate 8 of the electrode plate group 6 and the foot portions 9b of each cathode plate 9 are fitted. The foot fixing recesses 17, 17 are formed so that their longitudinal direction is directed toward the width direction of the bottom plate 15, that is, the stacking direction of the electrode plate group 6, and are arranged in a direction perpendicular to the stacking direction of the electrode plate group 6 (width direction). ). Further, on the back side of the bottom plate part 15, a pair of protrusions 18 into which the saddle 4 is fitted extend along the longitudinal direction of the bottom plate part 15.
5, that is, the stacking direction of the electrode plate group 6. Both side plate parts 16 of the electrode plate group housing 12 are connected to both ends of the bottom plate part 15 in the width direction, and these side plate parts 16 are connected to each other at the boundary between the two sides.
is bendable. The foot portions 8b of each anode plate 8 and the foot portions 9b of each cathode plate 9 constituting the electrode plate group 6 are inserted into the foot fixing recesses 17, 17 of the bottom plate portion 15. It is placed on the bottom plate part 15 with the stacking direction aligned with the width direction of the bottom plate part 15. The ends of the electrode plate group 6 in the direction perpendicular to the stacking direction (width direction of the electrode plate group) are positioned by a pair of stopper projections 19, 19 provided on the bottom plate portion 15. In this embodiment, the foot fixing recess 1
7, 17 and a pair of stopper protrusions 19, 19,
This constitutes a movement prevention portion that prevents movement of the electrode plate group 6 in the width direction.

When holding the electrode plate group 6, the pair of side plate portions 16 are bent to stand up substantially at right angles to the plate surface of the bottom plate portion 15 so as to sandwich the electrode plate group 6 from the stacking direction. It's summery. Each side plate portion 16 includes
A large number of electrolyte flow holes 20 are formed to make it easier for the electrolyte to come into contact with the electrode plate group 6 . Also, the bottom plate part 1
A large number of elongated holes (drop holes) 21 are formed in the electrode plate 5 to prevent the active materials of the anode plate 8 and the cathode plate 9 from settling on the bottom plate portion 15 and to prevent a short circuit between the electrode plates. Since the active material that has fallen off from each electrode plate falls to the lower side of the bottom plate part 15 through these long holes 21, it is possible to prevent a short circuit between the electrode plates due to the fallen active material.

When the electrode plate group storage body 12 containing the electrode plate group 6 is stored in each cell chamber 3, each side plate portion 16 is in contact with the spacer 5, and the edges 22 at both longitudinal ends of the bottom plate portion 15 are in contact with the spacer 5. It abuts against the inner wall of the cell chamber 3, and this abutment positions and fixes the electrode plate group accommodating body 12.

Next, a method for assembling the lead-acid battery of the above embodiment will be explained. First, the ears 9a of each cathode plate 9 of a laminate in which the cathode plate 9, separator 7, anode plate 8, . 8
The tabs 8a are connected by a strap 10 having a pole post 13 to form a plate group 6. The electrode plate group 6 constructed in this manner is housed in the electrode plate group container 12 and stored in each cell chamber 3 of the battery case body 1 as described above. When the electrode plate group 6 is stored in each cell chamber 3 together with the electrode plate group container 12, the pair of protrusions 18 of the bottom plate part 15 fit into the saddle 4 of the battery case body 1, and both longitudinal edges of the bottom plate part 15 22 comes into contact with the inner wall of the cell chamber 3, and the plate surface of each side plate portion 16 also comes into contact with the spacer 5, so that the electrode plate group 6 is positioned and fixed.

The electrode plate group housing 12 may have a bottomed box-like structure that covers not only both ends of the electrode plate group 6 in the stacking direction but also both ends in a direction perpendicular to the stacking direction. In this way, the electrode plate group 6 can be protected more effectively.

[Effects of the invention] As described above, according to the invention, each electrode plate group is housed in the electrode plate group container and stored in each cell chamber, so that the stacked posture of the electrode plate groups is not disturbed. It can be stored in each cell chamber, and it is possible to prevent excessive force from being applied when inserting it into the cell chamber.
In addition, since the electrode plate group can maintain the posture housed in the cell chamber with the electrode plate group housing, even if vibrations occur after the plate group is housed in the cell chamber, each strap will not be able to hold the anode plate or the cathode plate as before. It can prevent it from coming off.

In particular, according to the present invention, since the bottom plate of the electrode plate group storage body is provided with a movement prevention part that prevents the movement of the electrode plate group in the width direction perpendicular to the stacking direction of the electrode plate groups, It is possible to reliably prevent the stacking posture from collapsing. In addition, a drop hole is formed in the bottom plate of the electrode group housing to allow the fallen active material to fall below the bottom plate, so even if the electrode plate group housing is provided, the electrodes will not be affected by the fallen active material. This can prevent short circuits between the plates. Furthermore, since a plurality of electrolyte flow holes are formed in the pair of side plates of the electrode plate group housing, there is an advantage that the electrode plate group housing does not obstruct the flow of the electrolyte.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional front view of a lead-acid battery according to an embodiment of the present invention, FIG. 2 is a cross-sectional side view of FIG.
Figure 4 is a sectional view taken along the - line in Figure 3, and Figure 5 is a cross-sectional view of Figure 3.
The plan view of the figure and FIG. 6 are a sectional front view of a conventional lead-acid battery of this type. 1... Battery case body, 2... Bulkhead, 4... Saddle, 5...
...Spacer, 6... Plate group, 7... Separator,
8... Anode plate, 8b... Foot part of the anode plate, 9... Cathode plate, 9b... Foot part of the cathode plate, 12... Electrode plate group housing, 15... Bottom plate part, 16... Side plate part , 22...
...Both edges of the bottom plate.

Claims (1)

[Claims for Utility Model Registration] It has a battery case consisting of a battery case body with a lid, and a group of electrode plates is housed in each cell chamber of the battery case, and both ends of the plate group in the stacking direction and each of the above-mentioned In a lead-acid battery in which a spacer is disposed between an inner wall of a cell chamber and the electrode plate group is pressurized in the stacking direction, a pair of side plate portions that cover at least both ends of the electrode plate group in the stacking direction and the electrode plate are provided. An electrode plate group accommodating body integrally formed with a bottom plate portion that covers the bottom of the group accommodates the electrode plate group, the pair of side plate portions are in contact with the spacer, and the bottom plate portion is in contact with the battery case body. is housed in the cell chamber so as to be separated from the bottom wall of the electrode plate group housing, and the bottom plate portion of the electrode plate group accommodating body has a movement that prevents movement of the electrode plate group in a width direction perpendicular to the stacking direction. A lead-acid battery characterized in that a blocking part and a drop hole are formed to allow fallen active material to fall below the bottom plate part, and a plurality of electrolyte flow holes are formed in the pair of side plate parts. .